From the Department of Neurobiology and Behavior, the Department of Biochemistry and Cell Biology, and the Center for Nervous System Disorders, Stony Brook University, Stony Brook, New York 11794-5230 and

Institute of Molecular Biophysics, and National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310; and Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306;

Department of Physics, Florida State University, Tallahassee, Florida, United States of America; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida, United States of America.